CN104452835A - Testing device for power transmission line foundation test and setting method thereof - Google Patents

Testing device for power transmission line foundation test and setting method thereof Download PDF

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Publication number
CN104452835A
CN104452835A CN201410740963.5A CN201410740963A CN104452835A CN 104452835 A CN104452835 A CN 104452835A CN 201410740963 A CN201410740963 A CN 201410740963A CN 104452835 A CN104452835 A CN 104452835A
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CN
China
Prior art keywords
organic glass
preformation
cushion cap
stake
soil
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Application number
CN201410740963.5A
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Chinese (zh)
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CN104452835B (en
Inventor
董梅
李鹏
朱立位
张大长
宋林辉
张真卿
吴昊
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Lianyungang Zhiyuan Electric Power Design Co Ltd
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Nanjing Tech University
Lianyungang Power Supply Co of Jiangsu Electric Power Co
Original Assignee
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Nanjing Tech University
Lianyungang Power Supply Co of Jiangsu Electric Power Co
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Application filed by State Grid Corp of China SGCC, State Grid Jiangsu Electric Power Co Ltd, Nanjing Tech University, Lianyungang Power Supply Co of Jiangsu Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN201410740963.5A priority Critical patent/CN104452835B/en
Publication of CN104452835A publication Critical patent/CN104452835A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00Testing foundations or foundation structures

Abstract

The invention discloses a testing device for power transmission line foundation test and a setting method thereof. Organic glass piles are gradually pressed into soil symmetrically from the middle to two directions, not only effectively simulate the program of gradual piling in the practical construction site, but also can effectively avoid the problem that soil is extruded to one direction, so that the soil is not uniformly extruded or the soil is severely extruded to cause a model pile which is pressed into the soil in advance to be inclined, and enables test results to be more accurate; after the organic glass piles are gradually pressed into the soil, assembled with a model bearing platform, and then are filled with chloroform, so that the organic glass piles are connected with the model bearing platform, the method is simple and efficient, and the problems that grouped piles are pressed into soil at the same time to cause high time consumption and power consumption can be effectively prevented; in addition, organic glass model components are sufficiently and fixedly connected with one another through the chloroform, so that the components can be applied to tests of pulling upwards and pressing down.

Description

For experimental rig and the method to set up thereof of transmission line foundation test
Technical field
The invention belongs to geotechnical engineering multi-column pier foundation modeling techniques field, particularly a kind of experimental rig for transmission line foundation test and method to set up thereof.
Background technology
Multi-column pier foundation is the important content of construction work, and experimental study is the important method of Research Group pile foundation.More difficult and cost dearly owing to carrying out on-the-spot real model experiment, and the test of large-scale clump of piles modeling both can simulated field stress field, the research distortion of foundation and instability Mechanism, be easy to again to carry out, cost is lower relatively, therefore multi-column pier foundation model testing is significant.
General ground foundation model test adopts and first assembles clump of piles model, is then pressed in soil, then can produce larger difficulty when the method applies to multi-column pier foundation test.Consuming time, the effort that clump of piles model is pressed into simultaneously is very large, and the situation that cannot be pressed into completely more may be had to occur.And the press-in simultaneously of a large amount of stake models can allow soil be subject to severe crush and cause a model inclination, this can cause a rough sledding such as model discontinuity, experimental result inaccuracy to occur.
Due to the existence of above-mentioned various problems, when carrying out multi-column pier foundation model testing, existing test method can cause test operation loaded down with trivial details, and result precision is not high.So, find a kind of effective embodiment practice of construction and to be applicable to the new method of existing clump of piles model testing necessary.
Summary of the invention
The object of the present invention is to provide a kind of easy and simple to handle, result accurately for experimental rig and the method to set up thereof of transmission line foundation test.
The technical solution realizing the object of the invention is:
For an experimental rig for transmission line foundation test, comprise organic glass cushion cap, organic glass stake and organic glass column; The lower surface of organic glass cushion cap is provided with the preformation stake holes with organic glass stake diametric fit, preformation stake holes is communicated with by preformation aperture with the upper surface of machine glass cushion cap, the upper surface of machine glass cushion cap is provided with the preformation leghole with machine glass columns diametric fit, organic glass stake and preformation stake holes are connected by the chloroform injected from preformation aperture, and machine glass columns and preformation leghole are connected by chloroform.
For a method to set up for transmission line of electricity organic glass multi-column pier foundation test experimental rig, comprise the following steps:
Step one: the earth surfaces in model casing arrange according to the position of organic glass cushion cap and organic glass cushion cap lower surface with the particular location of the spacing determination organic glass stake of the preformation stake holes of organic glass stake diametric fit, then adopt and from middle order of carrying out to both direction symmetry, organic glass stake is pressed in earth by root, and the reserved length identical with the preformation stake holes degree of depth is outside earth;
Step 2: all after organic glass stake press-in, is reserved in organic glass stake that part outside earth is corresponding with the preformation stake holes of machine glass cushion cap lower surface assembles;
Step 3: inject chloroform by preformation aperture organic glass cushion cap being communicated with preformation stake holes and organic glass cushion cap upper surface, allows organic glass stake and organic glass cushion cap complete reaction consolidation is in aggregates;
Step 4: inject chloroform in the preformation leghole that organic glass cushion cap upper surface has, and being placed in preformation leghole by organic glass column fast, allows organic glass column and organic glass cushion cap complete reaction consolidation is in aggregates;
Step 5: mud is injected in the gap between organic glass cushion cap soffit and earth, and mud must enrich in whole space, makes organic glass cushion cap and earth produce effective contact area.
The present invention compared with prior art, its remarkable advantage:
(1) organic glass stake of the present invention adopts from middle order of carrying out to both direction symmetry by root press-in soil, not only effectively simulate the on-the-spot program by root piling of practice of construction, and can effectively avoid soil to cause soil to extrude uneven or soil towards the extruding of direction being subject to the Model Pile that severe crush makes first to be pressed into and tilting, make result of the test more accurate.
(2) organic glass stake of the present invention is by after root press-in, then assemble with organic glass cushion cap, and then inject chloroform and make it connected, this method is simple and convenient, can effectively avoid a clump of piles be pressed into simultaneously consuming time greatly, the difficult problem such as effort is large.
(3) organic glass model assembly of the present invention is fully consolidated by chloroform, can be used for pulling out, pressing down two kinds of tests.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structure top view of the experimental rig that the present invention tests for transmission line foundation.
Fig. 2 is the elevation of the experimental rig that the present invention tests for transmission line foundation.
Fig. 3 is the sectional view of the experimental rig cushion cap that the present invention tests for transmission line foundation.
Fig. 4 is the press-in precedence diagram of the present invention for the method to set up organic glass stake of transmission line foundation test experimental rig.
Fig. 5 is that the present invention is for the transmission line foundation test method to set up organic glass stake of experimental rig and the assembling schematic diagram of organic glass cushion cap.
Fig. 6 is the chloroform injection schematic diagram of the present invention for the method to set up of transmission line foundation test experimental rig.
To be the present invention assemble schematic diagram for the organic glass column of the method to set up of transmission line foundation test experimental rig and organic glass cushion cap to Fig. 7.
Fig. 8 is that the present invention is for the overall structure schematic diagram after the method to set up slip casting of transmission line foundation test experimental rig.
Detailed description of the invention
Composition graphs 1 ~ Fig. 8:
A kind of experimental rig for transmission line foundation test of the present invention, comprises organic glass cushion cap 1, organic glass stake 2 and organic glass column 3; The lower surface of organic glass cushion cap 1 is provided with the preformation stake holes 5 with organic glass stake 2 diametric fit, preformation stake holes 5 is communicated with by preformation aperture 6 with the upper surface of machine glass cushion cap 1, the upper surface of machine glass cushion cap 1 is provided with the preformation leghole 7 with machine glass columns 3 diametric fit, organic glass stake 2 and preformation stake holes 5 are connected by the chloroform injected from preformation aperture 6, and machine glass columns 3 and preformation leghole 7 are connected by chloroform.
Organic glass column 3 is provided with in the direction axially vertical with it preformation loading hole 8 running through organic glass column 3.
For a method to set up for transmission line foundation test experimental rig, comprise the following steps:
Step one: earth 4 surface in model casing arrange according to the position of organic glass cushion cap 1 and organic glass cushion cap 1 lower surface with the particular location of the spacing determination organic glass stake 2 of the preformation stake holes 5 of organic glass stake 2 diametric fit, then adopt and from middle order of carrying out to both direction symmetry, organic glass stake 2 is pressed in earth 4 by root, and the reserved length identical with preformation stake holes 5 degree of depth is outside earth 4;
Step 2: after all organic glass stake 2 is pressed into, is reserved in organic glass stake 2 that part outside earth 4 is corresponding with the preformation stake holes 5 of machine glass cushion cap 1 lower surface assembles;
Step 3: inject chloroform by the preformation aperture 6 organic glass cushion cap 1 being communicated with preformation stake holes 5 and organic glass cushion cap 1 upper surface, allows organic glass stake 2 with organic glass cushion cap 1 complete reaction and consolidation is in aggregates;
Step 4: inject chloroform in the preformation leghole 7 that organic glass cushion cap 1 upper surface has, and be placed in preformation leghole 7 by organic glass column 3 fast, allows organic glass column 3 with organic glass cushion cap 1 complete reaction and consolidation is in aggregates;
Step 5: mud is injected in the gap between organic glass cushion cap 1 soffit and earth 4, and mud must enrich in whole space, makes organic glass cushion cap 1 and earth 4 produce effective contact area.
Embodiment:
Composition graphs 1 ~ Fig. 8:
For a method to set up for transmission line foundation test experimental rig, comprise the following steps:
Step one: earth 4 surface in model casing arrange according to the position of organic glass cushion cap 1 and organic glass cushion cap 1 lower surface with the particular location of the spacing determination organic glass stake 2 of the preformation stake holes 5 of organic glass stake 2 diametric fit, then adopt and from middle order of carrying out to both direction symmetry, organic glass stake 2 is pressed in earth 4 by root, and the reserved length identical with preformation stake holes 5 degree of depth is outside earth 4; As shown in Figure 4, be pressed into successively in soil 4 according to the order of 2-1 ~ 2-9 for nine organic glass stakes 2, effectively simulate the on-the-spot program by root piling of practice of construction.
Step 2: as shown in Figure 5, after whole organic glass stake 2 is pressed into, is reserved in organic glass stake 2 that part outside earth 4 is corresponding with the preformation stake holes 5 of machine glass cushion cap 1 lower surface assembles;
Step 3: as shown in Figure 6, injects chloroform by the preformation aperture 6 organic glass cushion cap 1 being communicated with preformation stake holes 5 and organic glass cushion cap 1 upper surface, allows organic glass stake 2 with organic glass cushion cap 1 complete reaction and consolidation is in aggregates;
Step 4: as shown in Figure 7, chloroform is injected in the preformation leghole 7 that organic glass cushion cap 1 upper surface has, and fast organic glass column 3 is placed in preformation leghole 7, allow organic glass column 3 with organic glass cushion cap 1 complete reaction and consolidation is in aggregates, now organic glass cushion cap 1, organic glass stake 2 and organic glass column 3 define an entirety;
Step 5: as shown in Figure 8, mud is injected in the gap between organic glass cushion cap 1 soffit and earth 4, and mud must enrich in whole space, makes organic glass cushion cap 1 and earth 4 produce effective contact area.
The experimental rig for transmission line foundation test completed as depicted in figs. 1 and 2, wherein machine glass cushion cap 1 is pre-add workpiece, its sectional drawing as shown in Figure 3, the lower surface of organic glass cushion cap 1 is provided with the preformation stake holes 5 with organic glass stake 2 diametric fit, preformation stake holes 5 is communicated with by preformation aperture 6 with the upper surface of machine glass cushion cap 1, and the upper surface of machine glass cushion cap 1 is provided with the preformation leghole 7 with machine glass columns 3 diametric fit.

Claims (3)

1., for an experimental rig for transmission line foundation test, it is characterized in that: comprise organic glass cushion cap (1), organic glass stake (2) and organic glass column (3); The lower surface of organic glass cushion cap (1) is provided with the preformation stake holes (5) with organic glass stake (2) diametric fit, preformation stake holes (5) is communicated with by preformation aperture (6) with the upper surface of machine glass cushion cap (1), the upper surface of machine glass cushion cap (1) is provided with the preformation leghole (7) with machine glass columns (3) diametric fit, organic glass stake (2) is connected by the chloroform injected from preformation aperture (6) with preformation stake holes (5), and machine glass columns (3) and preformation leghole (7) are connected by chloroform.
2. the experimental rig for transmission line foundation test according to claim 1, is characterized in that: described organic glass column (3) is provided with in the direction axially vertical with it preformation loading hole (8) running through organic glass column (3).
3., for a method to set up for transmission line foundation test experimental rig, it is characterized in that: comprise the following steps:
Step one: earth (4) surface in model casing arrange according to the position of organic glass cushion cap (1) and organic glass cushion cap (1) lower surface with the particular location of spacing determination organic glass stake (2) of the preformation stake holes (5) of organic glass stake (2) diametric fit, then adopt and from middle order of carrying out to both direction symmetry, organic glass stake (2) is pressed in earth (4) by root, and the reserved length identical with preformation stake holes (5) degree of depth at earth (4) outward;
Step 2: all after organic glass stake (2) press-in, is reserved in organic glass stake (2) that earth (4) part is outward corresponding with the preformation stake holes (5) of machine glass cushion cap (1) lower surface assembles;
Step 3: inject chloroform by the upper preformation aperture (6) being communicated with preformation stake holes (5) and organic glass cushion cap (1) upper surface of organic glass cushion cap (1), allows organic glass stake (2) with organic glass cushion cap (1) complete reaction and consolidation is in aggregates;
Step 4: inject chloroform in the preformation leghole (7) that organic glass cushion cap (1) upper surface has, and fast organic glass column (3) is placed in preformation leghole (7), allow organic glass column (3) and organic glass cushion cap (1) complete reaction consolidation is in aggregates;
Step 5: mud is injected in the gap between organic glass cushion cap (1) soffit and earth (4), mud must enrich in whole space, makes organic glass cushion cap (1) and earth (4) produce effective contact area.
CN201410740963.5A 2014-12-06 2014-12-06 For experimental rig and the method to set up thereof of transmission line foundation test Active CN104452835B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105002939A (en) * 2015-07-29 2015-10-28 武汉科技大学 Model device and method for grouped pile field test
CN110607811A (en) * 2019-10-25 2019-12-24 中铁第四勘察设计院集团有限公司 Pile group loading test device and method for simulating high-speed rail bridge operation load

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6869255B1 (en) * 2002-11-05 2005-03-22 Beck, Iii August H. Post-stressed pile
CN102864788A (en) * 2012-10-19 2013-01-09 江苏华通工程检测有限公司 Method for underpinning reinforced bridge pile foundation by bear-type static pressure cluster pile
CN103882893A (en) * 2014-03-26 2014-06-25 河海大学 Pile foundation dynamic load testing system based on optical fiber grating and testing method of pile foundation dynamic load testing system
CN203782729U (en) * 2014-03-06 2014-08-20 国家电网公司 Diamond-shape arranged low pile caps provided with reinforcing ribs
CN203795485U (en) * 2014-04-10 2014-08-27 山东电力工程咨询院有限公司 Horizontal bearing characteristics test model of prestressed concrete pipe pile
CN204326121U (en) * 2014-12-06 2015-05-13 国家电网公司 For the experimental rig of transmission line foundation test

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6869255B1 (en) * 2002-11-05 2005-03-22 Beck, Iii August H. Post-stressed pile
CN102864788A (en) * 2012-10-19 2013-01-09 江苏华通工程检测有限公司 Method for underpinning reinforced bridge pile foundation by bear-type static pressure cluster pile
CN203782729U (en) * 2014-03-06 2014-08-20 国家电网公司 Diamond-shape arranged low pile caps provided with reinforcing ribs
CN103882893A (en) * 2014-03-26 2014-06-25 河海大学 Pile foundation dynamic load testing system based on optical fiber grating and testing method of pile foundation dynamic load testing system
CN203795485U (en) * 2014-04-10 2014-08-27 山东电力工程咨询院有限公司 Horizontal bearing characteristics test model of prestressed concrete pipe pile
CN204326121U (en) * 2014-12-06 2015-05-13 国家电网公司 For the experimental rig of transmission line foundation test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105002939A (en) * 2015-07-29 2015-10-28 武汉科技大学 Model device and method for grouped pile field test
CN110607811A (en) * 2019-10-25 2019-12-24 中铁第四勘察设计院集团有限公司 Pile group loading test device and method for simulating high-speed rail bridge operation load

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Effective date of registration: 20200522

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Co-patentee after: JIANGSU ELECTRIC POWER Co.

Patentee after: State Grid Corporation of China

Co-patentee after: LIANYUNGANG POWER SUPPLY COMPANY OF JIANGSU ELECTRIC POWER Co.

Co-patentee after: NANJING TECH University

Co-patentee after: Lianyungang Zhiyuan Electric Power Design Co., Ltd

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Co-patentee before: JIANGSU ELECTRIC POWER Co.

Patentee before: State Grid Corporation of China

Co-patentee before: LIANYUNGANG POWER SUPPLY COMPANY OF JIANGSU ELECTRIC POWER Co.

Co-patentee before: NANJING TECH University

TR01 Transfer of patent right